Power supply device with PCB positioning function and method for manufacturing the same

Abstract

A power supply device with PCB-positioning features includes a casing, a PCB (Printed Circuit Board) and at least one pair of slots. The casing defines an accommodating space and has at least one opening. The PCB is disposed in the accommodating space and has electronic elements thereon. The at least one pair of slots is disposed at inner walls of the casing for positioning the PCB. A gel-fillable channel is defined between the electronic elements and the inner walls of the casing.

What is claimed is: 
     
       1. A power supply device, comprising:
 a casing having an accommodating space defined by inner walls of the casing, wherein the inner walls comprise two opposite inner side walls and the accommodating space is located between the inner side walls; 
 a printed circuit board (PCB) having a plurality of electronic elements thereon and being disposed in the accommodating space; 
 a gel-fillable channel defined between the electronic elements and the inner walls of the casing, wherein a width of the gel-fillable channel is equal to or more than about 5 millimeters (mm); and 
 two elongate slots, each disposed at one of the inner side walls and configured to engage a peripheral side of the PCB for positioning the PCB, 
 wherein the inner side walls extend toward the PCB and chamfer from faces of the inner side walls towards the peripheral sides of the PCB to form chamfered edges and the elongate slots; 
 wherein one of the elongate slots on one of the inner side walls has a bottom surface and a pair of side surfaces, the bottom surface contacts the peripheral side of the PCB, the pair of side surfaces contact opposing faces of the PCB respectively, the chamfered edges on the one of the inner side walls are spaced apart from the bottom surface and are connected to the side surfaces respectively. 
 
     
     
       2. The power supply device of  claim 1 , wherein the elongate slots are grooves extending along the inner walls of the casing. 
     
     
       3. The power supply device of  claim 1 , further comprising a sealing module, the sealing module comprising:
 a sealing board covering an opening of the casing to seal the accommodating space; and 
 a protrusion extending from the sealing board towards the accommodating space and configured to position the PCB. 
 
     
     
       4. The power supply device of  claim 1 , wherein the elongate slots are elongated in a first direction corresponding to the peripheral sides of the PCB, and wherein directions which the inner side walls chamfer from the faces of the inner side walls towards the peripheral sides of the PCB are orthogonal to the first direction. 
     
     
       5. The power supply device of  claim 1 , wherein the elongate slots contact to engage the PCB at a contact region of the peripheral side of the PCB, and wherein portions of the inner side walls chamfering from the faces of the inner side walls towards the peripheral sides of the PCB provide a non-contact region adjacent to the contact region, and wherein both the contact region and the non-contact region extend correspondingly to the elongate slots. 
     
     
       6. The power supply device of  claim 1 , wherein the chamfered edges extend along the elongate slots. 
     
     
       7. The power supply device of  claim 1 , wherein the inner side walls extend towards the PCB to form protruded portions of the inner side walls and chamfer from the protruded portions towards the PCB to form lips of the elongated slots, and wherein an opening of the lips is configured to engage with the peripheral side of the PCB. 
     
     
       8. A power supply device, comprising:
 a casing having an accommodating space defined by inner walls of the casing, wherein the inner walls comprise two opposite inner side walls, and the accommodating space is located between the inner side walls; 
 a printed circuit board (PCB) having a plurality of electronic elements thereon and being disposed in the accommodating space; and 
 two elongate slots disposed at the two inner side walls respectively, the two elongate slots being configured to engage a first peripheral side and a second peripheral side of the PCB respectively; 
 wherein one of the elongate slots comprises an engaging portion and a chamfered portion, the engaging portion contacting the first peripheral side of the PCB, and the chamfered portion being connected between the engaging portion and one of the inner side walls, wherein the chamfered portion and the PCB are separated by a gap therebetween, and wherein the gap tapers towards the engaging portion in a direction pointing from the second peripheral side towards the first peripheral side; 
 wherein the engaging portion has a bottom surface and a pair of side surfaces, the bottom surface contacts the first peripheral side of the PCB, the pair of side surfaces contact opposing faces of the PCB respectively, the chamfered portion is spaced apart from the bottom surface and is connected to one of the side surfaces; 
 wherein a gel-fillable channel is defined between the electronic elements and the inner walls of the casing, and a width of the gel-fillable channel is equal to or more than about 5 millimeters (mm). 
 
     
     
       9. The power supply device of  claim 8 , wherein the elongate slots are grooves extending along the inner walls of the casing. 
     
     
       10. The power supply device of  claim 8 , further comprising a sealing module, the sealing module comprising:
 a sealing board covering an opening of the casing to seal the accommodating space; and 
 a protrusion extending from the sealing board towards the accommodating space and configured to position the PCB. 
 
     
     
       11. A power supply device, comprising:
 a casing having an accommodating space defined by inner walls of the casing, wherein the inner walls comprise two opposite inner side walls, and the accommodating space is located between the inner side walls; 
 a printed circuit board (PCB) having a plurality of electronic elements thereon and being disposed in the accommodating space; and 
 two elongate slots disposed at the two inner side walls respectively, the two elongate slots being configured to engage a first peripheral side and a second peripheral side of the PCB respectively; 
 wherein one of the elongate slots comprises an engaging portion and a chamfered portion, the engaging portion contacting the first peripheral side of the PCB, the chamfered portion being connected between the engaging portion and one of the inner side walls, and the chamfered portion chamfering from a face of the inner side walls towards the first peripheral side of the PCB, wherein the chamfered portion and the PCB are separated by a gap therebetween, and wherein the gap tapers towards the engaging portion in a direction pointing from the second peripheral side towards the first peripheral side; 
 wherein the engaging portion has a bottom surface and a pair of side surfaces, the bottom surface contacts the first peripheral side of the PCB, the pair of side surfaces contact opposing faces of the PCB respectively, the chamfered portion is spaced apart from the bottom surface and is connected to one of the side surfaces; 
 wherein a gel-fillable channel is defined between the electronic elements and the inner walls of the casing, and a width of the gel-fillable channel is equal to or more than about 5 millimeters (mm). 
 
     
     
       12. The power supply device of  claim 11 , wherein the elongate slots are grooves extending along the inner walls of the casing. 
     
     
       13. The power supply device of  claim 11 , further comprising a sealing module, the sealing module comprising:
 a sealing board covering an opening of the casing to seal the accommodating space; and 
 a protrusion extending from the sealing board towards the accommodating space and configured to position the PCB.